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  <title>Compress data with the specified encoding</title>
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    <li>Compress data with the specified encoding</li>
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  <div id="layout-content"><div id="function.zlib-encode" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">zlib_encode</h1>
  <p class="verinfo">(PHP 5 &gt;= 5.4.0, PHP 7, PHP 8)</p><p class="refpurpose"><span class="refname">zlib_encode</span> &mdash; <span class="dc-title">Compress data with the specified encoding</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-function.zlib-encode-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>zlib_encode</strong></span>(<span class="methodparam"><span class="type">string</span> <code class="parameter">$data</code></span>, <span class="methodparam"><span class="type">int</span> <code class="parameter">$encoding</code></span>, <span class="methodparam"><span class="type">int</span> <code class="parameter">$level</code><span class="initializer"> = -1</span></span>): <span class="type"><span class="type">string</span>|<span class="type"><span class="type false">false</span></span></span></div>

  <p class="para rdfs-comment">
   Compress data with the specified encoding.
  </p>

  <div class="warning"><strong class="warning">警告</strong><p class="simpara">本函数还未编写文档，仅有参数列表。</p></div>

 </div>


 <div class="refsect1 parameters" id="refsect1-function.zlib-encode-parameters">
  <h3 class="title">参数</h3>
  <dl>
   
    <dt>
<code class="parameter">data</code></dt>

    <dd>

     <p class="para">
      The data to compress.
     </p>
    </dd>

   
   
    <dt>
<code class="parameter">encoding</code></dt>

    <dd>

     <p class="para">
      The compression algorithm. Either <strong><code>ZLIB_ENCODING_RAW</code></strong>,
      <strong><code>ZLIB_ENCODING_DEFLATE</code></strong> or
      <strong><code>ZLIB_ENCODING_GZIP</code></strong>.
     </p>
    </dd>

   
   
    <dt>
<code class="parameter">level</code></dt>

    <dd>

     <p class="para">
      
     </p>
    </dd>

   
  </dl>

 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.zlib-encode-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">

  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-function.zlib-encode-examples">
  <h3 class="title">范例</h3>
  <div class="example" id="zlib-encode.example.basic">
   <p><strong>示例 #1 <span class="function"><strong>zlib_encode()</strong></span> example</strong></p>
   <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$str&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">'hello&nbsp;world'</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$enc&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">zlib_encode</span><span style="color: #007700">(</span><span style="color: #0000BB">$str</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">ZLIB_ENCODING_DEFLATE</span><span style="color: #007700">);<br />echo&nbsp;</span><span style="color: #0000BB">bin2hex</span><span style="color: #007700">(</span><span style="color: #0000BB">$enc</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
   </div>

   <div class="example-contents"><p>以上例程会输出：</p></div>
   <div class="example-contents screen">
<div class="cdata"><pre>
789ccb48cdc9c95728cf2fca4901001a0b045d
</pre></div>
   </div>
  </div>
 </div>


 <div class="refsect1 seealso" id="refsect1-function.zlib-encode-seealso">
  <h3 class="title">参见</h3>
  <ul class="simplelist">
   <li class="member"><span class="function"><a href="function.zlib-decode.html" class="function" rel="rdfs-seeAlso">zlib_decode()</a> - Uncompress any raw/gzip/zlib encoded data</span></li>
  </ul>
 </div>


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